If your jaw is on the floor, we dont blame you.

Grapefruit is packed with vitamin C and is great for you, right?

But for anyone taking medication to manage a health issue, grapefruit may interact negatively with it.

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Statins and blood thinners arent the only types of medications that grapefruit might interact negatively with.

Be careful of foods high in vitamin K, too.

But its not just grapefruit you better be wary of.

Close-up of hands holding sliced citrus fruits, including an orange and a lemon, with question marks digitally added over the fruits

Foods rich in vitamin K can interfere with the effectiveness of blood thinners like warfarin.

Vitamin K helps blood clot, which counteracts the blood-thinning effects of warfarin.

Individuals on warfarin need to maintain consistent vitamin K intake daily and monitor their diet accordingly, Emerick said.

A bowl of quinoa salad with kale, roasted butternut squash, and various seeds placed on a wooden table next to a fork

The most important thing to keep in mind with vitamin K and certain medications isconsistency in dosage.

What if youre not on any medication?

Youll definitely want to attempt to drink less alcohol, Hormachea said.

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As we age, our bodys ability to digest alcohol can change dramatically.

Liver function declines, leading to a slower metabolism of alcohol.

Many medications used by older adults are also contraindicated for alcohol consumption.

Elderly individuals enjoy a joyful outdoor gathering, smiling and holding drinks. Prominent in the image, a woman wearing a hat and glasses, laughs with a drink in hand

As it is typical for appetite to diminish with age, every mouthful becomes increasingly important, she said.

In the meantime, you should probably skip that second glass of wine tonight!

This article originally appeared onHuffPost.